120406399651 has 8 divisors (see below), whose sum is σ = 127550865680. Its totient is φ = 113342662368.

The previous prime is 120406399643. The next prime is 120406399657. The reversal of 120406399651 is 156993604021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120406399651 - 2³ = 120406399643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120406399657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20179116 + ... + 20185081.

It is an arithmetic number, because the mean of its divisors is an integer number (15943858210).

Almost surely, 2^120406399651 is an apocalyptic number.

120406399651 is a deficient number, since it is larger than the sum of its proper divisors (7144466029).

120406399651 is a wasteful number, since it uses less digits than its factorization.

120406399651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40364373.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 120406399651 in words is "one hundred twenty billion, four hundred six million, three hundred ninety-nine thousand, six hundred fifty-one".